Syringe



T. w. BLAKESLEEJ SYRINGE.

APPLICATION FILED MAR. 26. 1920.

ATTORNEY Patentqd Sept. 20, 1921 T.W.Blakesle'e Mum WITNBSH TALBER'I w. B AKnsnnn, or mm, PENNSYLV NIA.

. sarnmon.

' Specification of Letters Patent. Patented Sept. 20, 1921 Application and March 26, 1920. Serial No. 368,955. I

T 0 all whom it may concern:

Be it known that I, TALBERT W. BLAKES- Lnn, a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania,'have invented new and useful Improvements in Syringes, of which the following is a. specificatlon.

My present invention is designed more particularly as an improvement on the syringe constituting the subject of my Patp ent No. 1,173,093 of February 22, 1916'; and it has for one of. its objects to provide means for expeditiously and efii'ectively locking the hollow stem in positive manner to the discharge cup with aviewto preventing casual movement of thehollow stem and the nozzle thereon relatively to the resilient spreader fingers. g

Another. object is to effectthe said locking and at thesame time formawater'tight joint between thehollow stem and the cup without the assistance of rubber or any other packing material.

To the attainment of the foregoing, the invention consists in the improvement as hereinafter described and definitely claimed.

In the accompanying drawings, hereby made a part hereof: 1

Figure 1 a side elevation of the improved syringe with the stem and nozzle in their foremost positions. 7 i

Fig. 2 is a 'diametrical section with the stem and nozzle retracted to distend the spreader fingers. i I a Fig. 3 is an inverted plan view of' the syringe.

' Fig. A is a detail diametrical section, on an enlargedscale, showing the stem locked to they discharge'cup as when the parts are relatively arranged as shownjin Fig 1.

Similar numerals of reference designate corresponding parts in all'of the views of the drawings.

In common with the syringe of my patent aforesaid, the improved syringe comprises a drain cup 1, a hollow stem 2, a nozzle 3 at the forward end of the stem, a nipple 4 at the rear end of the stem, a spreader disk 5 fixed on the stem, and a handle 6 on the stem and disposed below the cup. All of these elements are of metal, and in addition to the same the syringe includes spreader fingers 7 which are also of metal, and resilient. The syringe also comprises a resilient sleeve 8, preferably of rubber, which is arranged about the base portions of the spreader fingers and is snapped over or otherwise engaged with the beaded periphcry of the cup 1'. At 9 the cup 1 is provided with a discharge nipple.

In accordance with my present invention the cup 1 is provided with a central aperture 10 for the loose reception of the hollow stem, and in its underside and in communication with the said aperture 10 the cup is rovided with an upwardly tapered threaded socket 11 for an important purpose hereinafter set forth. v

The handle 6 is provided with an upwardly extending sleeve 12, and the said sleeve 12 is interiorly threaded to engage the threaded portion of the stem 2. v,

In the practical use of the syringe as improved, it will be readily understood that when the parts are positioned as shown in Fig. 1, and the handle 6 is turned so as to crowd the upper exteriorly threaded and tapered end 13 of the sleeve 12 into the thread 14.- of the socket 11, the stem 2 will be positively-fixed to the cup 1, and this in a water tight manner and without the assistance of rubber orother packing or other extraneous means.

The practical advantage of positively locking the hollow stem 2 to the cup 1 will be appreciated when it is stated that with the sleeve 8 snugly encompassing the spreader fingers and connected with the cup 1 as shown in Fig. 2, the locking of the hollow stem to the cup will preclude casual movement of the nozzle relatively tothe spreader fingers when the syringe is: inserted, and in that way will avert injury to the os.. The positive locking of the stem to the cup is also practically advantageous inasmuch as it eliminates the possibility of the nozzle being' moved forwardly of the spreaderfingers after insertion, and the injury to thepatient which would likely follow such accidental movement of thenozzle when fluid is discharged through the nozzle.

Notwithstanding the effective locking of the stem to the cup, it will be manifest that by turning the threaded end of the sleeve 12 out of the threaded socket of the cup, the

stem will be disconnected from the cup and may then be retracted to distend the spreader fingers after the manner shown in Fig. 2.

The resilient sleeve 8 is susceptible of being expeditiously and easily removed from the cup and the spreader fingers, and when sleeve 8 may as readily be replaced on the spreader fingers and reengaged with the beaded edge of the cup.

The lower ends of the spreader fingers 7 are connected to a disk 15*. The said disk 15* is loose on the stem 2, and its central aperture 16 is tapered upwardly to snugly and solidly receive the conical projection '17 of the cup 1. Figs. 2 and 4.

l/Vhen the stem 2 is positioned as shown in Fig. 2 or is otherwise positioned to distend the resilient spreader fingers, the sleeve 12 manifestly may-be turned upwardly on the threaded portion of the stem and into the socket 11 to positivelylock the stem 2 and. nozzle 3 and thereby preclude sudden accidental movement thereof under the tendency of the fingers 7 to spring inwardly, which might result in injury to the patient.

Having thus described my invention, what I claim and desire to secure by Letters-Patent, is V 1. In a syringe, the combinationof a hollow exteriorly threaded stem, a drain cup loosely surrounding the stem and having an inwardly tapered and threaded socket in its underside, and a sleeve threaded on the stem and having a tapered and threaded upper end for cooperation with the socket in the In a syringe, the combination of a hollow exteriorly threaded stem, a drain cup loosely surrounding the stern. and having an inwardly tapered and threaded socket in its underside, and a sleeve threaded on the stem and having a tapered and threaded upper end for cooperation with the socket in the cup, and also having a handle.

3. In a syringe, the combination of a hollow exteriorly threaded stem with a nozzle at its forward end and a spreader disk at an intermediatepoint in its length, a disk loosely receiving the stem, resilient spreader fingers connected to said loose disk and grouped about and opposed to the periphery of the first-named disk, a drain cup loosely receiving the stem and having a tapered and threaded socket in its underside, a resilient sleeve encompassing the spreader fingers and removably engaging the pe riphery of the cup, and aunt mounted on and engaging the threaded portion of the stem and having a tapered and threaded end to cooperate with the socket in the cup. 4. In a syringe, the combination of a hollow exteriorly threaded-stem with a nozzle at its, forward end and a spreader disk at an intermediate point in its length, a disk loosely receiving the stem, :resilient spreader fingers connected to said loose disk and grouped about and opposed to the periphery of the first-named disk, a drain cup loosely receiving the stem and having a tapered and threaded socket in its underside, a resilient sleeve encompassingthe spreader fingers and removably engaging the periphery of the cup, and a nut mounted on and engaging the threaded portion of the stem and having a tapered and threaded end to cooperate with the socket in the cup. 5. In a syringe, the combination of a hollow stem, a drain cup loosely surrounding the stem, and a nut connected to and ad justable on the stem and detachably connected to the cup and adapted when detached to be moved rectilinearly with the stem. r

6. In a syringe, the "combination of resilient spreader fingers, a hollow and exteriorly threaded stem associatedwith and having means to distend saidfingers, a drain cup looselyreceiving the stem, and'a threaded nut adjustable on the threaded portion of the stem and detachably connect-' ed to the cup to prevent endwise movement of the stem under the action of the resilient spreader fingers and adapted when detached to be moved rectilinearly with the stem.

7. In a syringe, the combination of resilient spreader fingers, a hollow andex teriorly threaded stem'having a nozzle and also having means to 'distend said fingers a disk connected to the fingers and receiving the stem, the said disk having a tapered aperture, a cup having a conical projection to fit in said apertureand also having a tapered and threaded socket, and a thread- 7 ed nut onthe stem and having a tapered and threaded. portion to cooperate with said socket. .V f V V In testimony whereof I aflix my signature.

TALBERT W. BLAKESLEEI I r 

